Old Part Numbers: 5140121-073/8" compression inlet x 1/2" male NPT outlet check valve with 1/8" hole and plug. If the small unloader (bleeder) valve on or under your pressure switch leaks constantly AFTER the unit shuts off, replace this part. The check...

1-1/2" NPSM x 1/4" NPT Bushing Reducer. NOTE: Also order the 513-0002 o-ring seal to complete the repair.

Old Part Numbers: S145-0543, 145-0456Stainless-steel braided tube that runs from pump to tank. Replace if leaking.  Specifications5.5" long with 3/8" compression fittings on each end

Hubcap for wheel, 1/2". Two required.

Drive Belt, .650" wide (5/8"), 6" Diameter.  Is your motor turning yet you have no pressure? Typically this is caused by a torn belt. To make installation easier, "walk" the belt onto the pulleys like you would a bicycle chain.